Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Current conditions at

Merced / Castle Air Force Base (KMER)

Lat: 37.36667°NLon: 120.56667°WElev: 187.0ft.

Fog

N/A

Humidity NA
Wind Speed N 0 MPH
Barometer NA
Dewpoint N/A
Visibility -0.25 mi
Last update NA
Extended Forecast for

5 Miles SE Denair CA

Dense Fog Advisory January 19, 03:50am until January 19, 12:00pm
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory January 19, 03:50am until January 19, 12:00pm

    NOW until 12:00pm Mon

    Dense Fog Advisory

  • Overnight

    Low: 44 °F

    Mostly Cloudy

  • M.L.King Day

    M.L.King Day: Cloudy, then gradually becoming mostly sunny, with a high near 56. Calm wind.

    High: 56 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Increasing clouds, with a low around 42. Calm wind.

    Low: 42 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 56. Calm wind becoming northwest around 5 mph.

    High: 56 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 43. Calm wind.

    Low: 43 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 59. Calm wind.

    High: 59 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 60. Northwest wind around 5 mph.

    High: 60 °F

    Partly Sunny

Detailed Forecast

Overnight
Mostly cloudy, with a steady temperature around 44. Calm wind.
M.L.King Day
Cloudy, then gradually becoming mostly sunny, with a high near 56. Calm wind.
Monday Night
Increasing clouds, with a low around 42. Calm wind.
Tuesday
Mostly cloudy, with a high near 56. Calm wind becoming northwest around 5 mph.
Tuesday Night
Mostly cloudy, with a low around 43. Calm wind.
Wednesday
Mostly cloudy, with a high near 59. Calm wind.
Wednesday Night
Mostly cloudy, with a low around 44. Calm wind.
Thursday
Partly sunny, with a high near 60. Northwest wind around 5 mph.
Thursday Night
Mostly cloudy, with a low around 43. North northwest wind around 5 mph becoming calm.
Friday
Mostly sunny, with a high near 59. Calm wind becoming west northwest around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 42. North wind around 5 mph becoming calm.
Saturday
Partly sunny, with a high near 59. Calm wind becoming northwest around 5 mph.
Saturday Night
Partly cloudy, with a low around 42. North wind around 5 mph becoming calm.
Sunday
Partly sunny, with a high near 60. Calm wind becoming east southeast around 5 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SE Denair CA
 37.47°N 120.73°W (Elev. 157 ft)
2:57 am PST Jan 19, 2026
3am PST Jan 19, 2026-6pm PST Jan 25, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database